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Combination of TPF regimen and cinobufotalin inhibits proliferation and induces apoptosis in human hypopharyngeal and laryngeal squamous cell carcinoma cells

Authors Shen X, Tao Y, Yang Y, Wang R, Fang J, Lian M

Received 27 August 2018

Accepted for publication 30 November 2018

Published 31 December 2018 Volume 2019:12 Pages 341—348

DOI https://doi.org/10.2147/OTT.S185428

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Justinn Cochran

Peer reviewer comments 3

Editor who approved publication: Dr Federico Perche


Xixi Shen,1 Yong Tao,2 Yifan Yang,1 Ru Wang,1 Jugao Fang,1 Meng Lian1

1Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China; 2Department of Pharmacy, Liaocheng Third People’s Hospital, Liaocheng, Shandong 252000, China

Background: Hypopharyngeal squamous cell carcinoma and laryngeal squamous cell carcinoma have a potential risk of metastasis and local recurrence. It is urgent to determine novel effective therapy.
Methods: UMSCC5 and FADU cells were treated with TPF regimen (a mixture comprising paclitaxel, cisplatin, and 5-fluorouracil), cinobufotalin, and combination. Cell counting kit-8 (CCK-8), clone formation assays, and flow cytometry were performed to investigate whether combination of cinobufotalin and TPF can exhibit synergistic effects in reducing tumor growth.
Results: CCK-8 assay and IC50 analysis showed that the TPF and cinobufotalin could suppress viability of UMSCC5 and FADU cells, implying the strong antitumor effect. The synergism between TPF and cinobufotalin was further verified by the CCK-8 and clone formation assays showing the TPF- and cinobufotalin-suppressed cell proliferation synergistically. Notably, flow cytometry showed that the combination also promoted apoptosis synergistically.
Conclusion: TPF regimen combining cinobufotalin suppressed proliferation and promoted apoptosis synergistically in hypopharyngeal squamous cell carcinoma and laryngeal squamous cell carcinoma cells.

Keywords: TPF regimen, cinobufotalin, hypopharyngeal and laryngeal squamous cell carcinoma, proliferation, apoptosis

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